从我的 IOS 应用程序在 DropBox 上上传图像

Question

我正在开发一个 IOS 应用程序，在该应用程序中我必须在 DropBox 上上传图像，但是当我在 iPhone 模拟器上一次上传图像时，只上传了 5-6 张图像，我遇到了连接超时（-1005 ),总是网络错误 ->

2014-06-10 11:42:53.283 PicBackMan_1[2602:60b] [WARNING] DropboxSDK: error making request to /1/metadata/dropbox/Photos - (404) Path '/Photos' not found  
2014-06-10 11:42:53.285 PicBackMan_1[2602:60b] restClient:loadMetadataFailedWithError: The operation couldn’t be completed. (dropbox.com error 404.)  
2014-06-10 11:42:55.167 PicBackMan_1[2602:60b] [WARNING] DropboxSDK: error making request to /1/files_put/dropbox/Super_12/PicBackMan-41.jpg - (-1005) Error Domain=NSURLErrorDomain Code=-1005 "The operation couldn’t be completed. (NSURLErrorDomain error -1005.)" UserInfo=0xa53b1d0 {destinationPath=/Super_12/PicBackMan-41.jpg, sourcePath=/Users/bettermac9/Library/Application Support/iPhone Simulator/7.1/Applications/F51F7F8F-91C5-4E67-90E6-4218941D3A67/Documents/image.jpg}

我收到这些类型的各种错误。iPhone 模拟器有什么问题吗。它在 iPhone 设备上是否正常工作？ 请帮帮我。

我在 DropBox 上上传图片的代码

- (void)_startUpload:(UIImage *)image
{
UIBackgroundTaskIdentifier bgTask = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
    [[UIApplication sharedApplication] endBackgroundTask:bgTask];
    NSLog(@"%@",(NSString*)countere);
}];
// while(countere != 0){
HUD=[[MBProgressHUD alloc]initWithView:self.view];
[self.view addSubview:HUD];

HUD.labelText=@"Please wait for Uploading";
HUD.dimBackground=YES;
[HUD show:YES];

//NSString *fileString=@"/%@",albumNAME;
//  NSData * JPEGData = UIImageJPEGRepresentation(image, 1.0);
self.file = [NSString stringWithFormat:@"/%@",albumNAME];
NSLog(@"File Name ---> %@",self.file);
NSInteger randomNumber = arc4random() % 100;
NSString *filename = [NSString stringWithFormat:@"PicBackMan-%ld.jpg",(long)randomNumber];
NSArray *pathList = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                        NSUserDomainMask,
                                                        YES);
countere--;
NSString *localPath = [[pathList objectAtIndex:0] stringByAppendingPathComponent:@"image.jpg"];;
NSLog(@"local Path ----> %@",localPath);
NSString *destDir = self.file;
count4++;
// [presenter presentHud:@"Uploading"];
[[self restClient] uploadFile:filename toPath:destDir
                withParentRev:nil fromPath:localPath];
if (count4%4==0) {
  [NSThread sleepForTimeInterval:2];
    NSLog(@"Background Thread Running");
}
//[NSThread sleepForTimeInterval:0.5];
[[UIApplication sharedApplication] endBackgroundTask:bgTask];
//   }
[self performSelectorOnMainThread:@selector(savingDone) withObject:nil waitUntilDone:YES];   
}

Answer 1

使用操作队列来限制并发上传的数量。或者，使用NSURLSessionUploadTask，并在NSURLSessionConfiguration 上设置HTTPMaximumConnectionsPerHost。